1. Installing Internal Optional Devices
Express5800/R120e-2M User’s Guide
121
Chapter 2 Preparations
1.27
Power Supply Unit
Your server can contain two power supply units. The server equipped with two hot-swap power supply units
provides a redundant power configuration that ensures continued operation of the system in the unlikely event
one of the power supply units fails.
Select a suitable power supply unit according to System Configuration Guide.
Tips
AC power supply unit has a cable tie to prevent AC cable from slipping out.
1.27.1
Cold Redundant Feature
The server supports the feature to optimize power efficiency as described below:
•
Cold redundant feature can run the system with optimum power efficiency by raising operating efficiency
of primary power supply unit and lowering that of redundant power supply unit in redundant power
configuration.
•
If power efficiency of power units is not optimized due to system configuration, this feature is disabled
automaticlly.
Cold redundant feature can be used under the following conditions:
•
Two power supply units must be installed for redundant configuration.
•
See
Chapter 2 (1. System BIOS) in "Maintenance Guide"
, change parameters as shown below, save the
settings and exit from SETUP.
Server
→
Power Control Configuration
→
Cold Redundant Mode
→
Enabled
Run SETUP again, and check if the status of
Cold Redundant Mode
shows
Enabled
in
Server
menu.
